Home / 3,427.12-5,138.86-2,107.63

Finding the Fourth Proportional to 3,427.12, 5,138.86 and 2,107.63

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Solution

The fourth proportional to 3,427.12, 5,138.86 and 2,107.63 is: 3,160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.12 : 5,138.86 = 2,107.63 : x
  2. Step 2: Convert to fraction form
    3,427.12/5,138.86 = 2,107.63/x
  3. Step 3: Cross multiply
    3,427.12x = 5,138.86 × 2,107.63
  4. Step 4: Simplify right side
    3,427.12x = 10,830,815.50
  5. Step 5: Solve for x
    x = 10,830,815.50/3,427.12
  6. Step 6: Final answer
    x = 3,160.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.